diff options
| author | Martijn Coenen <maco@google.com> | 2017-05-08 09:33:22 -0700 |
|---|---|---|
| committer | Martijn Coenen <maco@android.com> | 2017-10-05 09:58:05 +0200 |
| commit | e5e42eca05ada917895af063bc46badf1515043c (patch) | |
| tree | b647808c954fcc1c9d6936f3b71de686c81fc512 | |
| parent | 13f002354db13a029aef84aa1a8bfa51bd6b8d56 (diff) | |
ANDROID: binder: Add tracing for binder priority inheritance.
Bug: 34461621
Change-Id: I5ebb1c0c49fd42a89ee250a1d70221f767c82c7c
Signed-off-by: Martijn Coenen <maco@google.com>
| -rw-r--r-- | drivers/android/binder.c | 4 | ||||
| -rw-r--r-- | drivers/android/binder_trace.h | 24 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 32a2b2f44691..64f393239f6f 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -1154,6 +1154,10 @@ static void binder_do_set_priority(struct task_struct *task, task->pid, desired.prio, to_kernel_prio(policy, priority)); + trace_binder_set_priority(task->tgid, task->pid, task->normal_prio, + to_kernel_prio(policy, priority), + desired.prio); + /* Set the actual priority */ if (task->policy != policy || is_rt_policy(policy)) { struct sched_param params; diff --git a/drivers/android/binder_trace.h b/drivers/android/binder_trace.h index 76e3b9c8a8a2..b11dffc521e8 100644 --- a/drivers/android/binder_trace.h +++ b/drivers/android/binder_trace.h @@ -85,6 +85,30 @@ DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_ioctl_done); DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_write_done); DEFINE_BINDER_FUNCTION_RETURN_EVENT(binder_read_done); +TRACE_EVENT(binder_set_priority, + TP_PROTO(int proc, int thread, unsigned int old_prio, + unsigned int desired_prio, unsigned int new_prio), + TP_ARGS(proc, thread, old_prio, new_prio, desired_prio), + + TP_STRUCT__entry( + __field(int, proc) + __field(int, thread) + __field(unsigned int, old_prio) + __field(unsigned int, new_prio) + __field(unsigned int, desired_prio) + ), + TP_fast_assign( + __entry->proc = proc; + __entry->thread = thread; + __entry->old_prio = old_prio; + __entry->new_prio = new_prio; + __entry->desired_prio = desired_prio; + ), + TP_printk("proc=%d thread=%d old=%d => new=%d desired=%d", + __entry->proc, __entry->thread, __entry->old_prio, + __entry->new_prio, __entry->desired_prio) +); + TRACE_EVENT(binder_wait_for_work, TP_PROTO(bool proc_work, bool transaction_stack, bool thread_todo), TP_ARGS(proc_work, transaction_stack, thread_todo), |